Análisis microbiológico de las carnes molidas expendidas en el mercado la Condamine de la ciudad de Riobamba.

Abstract

The microbiological analysis of ground meats sold in the popular market “La Condamine” in Riobamba city, Chimborazo province aims to study the microbial quality of the product, and estimate how sanitary conditions of this perishable food are and determine if it is suitable for human consumption. The estudy was to analyze the ground beef seven points of sale into the market; sampling of each simple was randomly and in triplicate during three consecutive Saturdays, with reference to the Standard NTE INEN 1346:2010. For quantification of the microbial load Coliforms, Escherichia coli, Staphylococcus aureus and Salmonella were analyzed by the qualitative detection techniques Petrifilm and corresponding Technical Standards; it was handled by the method of successive dilutions to facilitate quantification (10-1 to 10-4), confirmatory testing of microorganisms were made in agar Mannitol, eosin methylene blue and Standards Methods after incubation and presence of colony forming units CFU/g; for statistical analysis ANOVA of one factor was applied (p>0.05). The results fail to meet the requirements established by the NTE INEN 1346:2010 standard for ground beef, being in excess of microbiological limit values Escherichia coli has 4.7x105 CFU/g; total coliform 2.4x106 CFU/g; Staphylococcus aureus 4.7x105 CFU/g and Salmonella Presents/25g respectively, establishing which can be a source of infection for ETA´s (foodborne illness), so that the implementation of regular monitoring is required by the Ministry of Health through trained technical professionals to reduce public health risks.